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Protected string spectrum in AdS(3)/CFT2 from worldsheet integrability
Stockholm University, Nordic Institute for Theoretical Physics (Nordita).
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Number of Authors: 5
2017 (English)In: Journal of High Energy Physics (JHEP), ISSN 1126-6708, E-ISSN 1029-8479, no 4, 091Article in journal (Refereed) Published
Abstract [en]

We derive the protected closed-string spectra of AdS(3)/CFT2 dual pairs with 16 supercharges at arbitrary values of the string tension and of the three-form fluxes. These follow immediately from the all-loop Bethe equations for the spectra of the integrable worldsheet theories. Further, representing the underlying integrable systems as spin chains, we find that their dynamics involves length-changing interactions and that protected states correspond to gapless excitations above the Berenstein-Maldacena-Nastase vacuum. In the case of AdS(3) x S-3 x T-4 the degeneracies of such operators precisely match those of the dual CFT2 and the supergravity spectrum. On the other hand, we find that for AdS(3) x S-3 x S-3 x S-1 there are fewer protected states than previous supergravity calculations had suggested. In particular, protected states have the same su(2) charge with respect to the two three spheres.

Place, publisher, year, edition, pages
2017. no 4, 091
Keyword [en]
AdS-CFT Correspondence, Bethe Ansatz, Conformal Field Theory
National Category
Physical Sciences
Identifiers
URN: urn:nbn:se:su:diva-143587DOI: 10.1007/JHEP04(2017)091ISI: 000399277300005OAI: oai:DiVA.org:su-143587DiVA: diva2:1104106
Available from: 2017-05-31 Created: 2017-05-31 Last updated: 2017-05-31Bibliographically approved

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Ohlsson Sax, Olof
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